Observations and modelling of algal growth on a snowpack in north-western Greenland
Snow algal bloom is a common phenomenon on melting snowpacks in polar and alpine regions and can substantially increase snow melt rates due to the effect of albedo reduction on the snow surface. In order to reproduce algal growth on the snow surface using a numerical model, temporal changes in snow...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00005433 2023-05-15T16:21:14+02:00 Observations and modelling of algal growth on a snowpack in north-western Greenland Onuma, Yukihiko Takeuchi, Nozomu Tanaka, Sota Nagatsuka, Naoko Niwano, Masashi Aoki, Teruo 2018-06 electronic https://doi.org/10.5194/tc-12-2147-2018 https://noa.gwlb.de/receive/cop_mods_00005433 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005390/tc-12-2147-2018.pdf https://tc.copernicus.org/articles/12/2147/2018/tc-12-2147-2018.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-12-2147-2018 https://noa.gwlb.de/receive/cop_mods_00005433 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005390/tc-12-2147-2018.pdf https://tc.copernicus.org/articles/12/2147/2018/tc-12-2147-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/tc-12-2147-2018 2022-02-08T22:59:33Z Snow algal bloom is a common phenomenon on melting snowpacks in polar and alpine regions and can substantially increase snow melt rates due to the effect of albedo reduction on the snow surface. In order to reproduce algal growth on the snow surface using a numerical model, temporal changes in snow algal abundance were investigated on the Qaanaaq Glacier in north-western Greenland from June to August 2014. Snow algae first appeared at the study sites in late June, which was approximately 94 h after air temperatures exceeded the melting point. Algal abundance increased exponentially after this appearance, but the increasing rate became slow after late July, and finally reached 3.5 × 107 cells m−2 in early August. We applied a logistic model to the algal growth curve and found that the algae could be reproduced with an initial cell concentration of 6.9 × 102 cells m−2, a growth rate of 0.42 d−1, and a carrying capacity of 3.5 × 107 cells m−2 on this glacier. This model has the potential to simulate algal blooms from meteorological data sets and to evaluate their impact on the melting of seasonal snowpacks and glaciers. Article in Journal/Newspaper glacier Greenland Qaanaaq The Cryosphere Niedersächsisches Online-Archiv NOA Greenland Qaanaaq ENVELOPE(-69.232,-69.232,77.467,77.467) The Cryosphere 12 6 2147 2158 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Onuma, Yukihiko Takeuchi, Nozomu Tanaka, Sota Nagatsuka, Naoko Niwano, Masashi Aoki, Teruo Observations and modelling of algal growth on a snowpack in north-western Greenland |
topic_facet |
article Verlagsveröffentlichung |
description |
Snow algal bloom is a common phenomenon on melting snowpacks in polar and alpine regions and can substantially increase snow melt rates due to the effect of albedo reduction on the snow surface. In order to reproduce algal growth on the snow surface using a numerical model, temporal changes in snow algal abundance were investigated on the Qaanaaq Glacier in north-western Greenland from June to August 2014. Snow algae first appeared at the study sites in late June, which was approximately 94 h after air temperatures exceeded the melting point. Algal abundance increased exponentially after this appearance, but the increasing rate became slow after late July, and finally reached 3.5 × 107 cells m−2 in early August. We applied a logistic model to the algal growth curve and found that the algae could be reproduced with an initial cell concentration of 6.9 × 102 cells m−2, a growth rate of 0.42 d−1, and a carrying capacity of 3.5 × 107 cells m−2 on this glacier. This model has the potential to simulate algal blooms from meteorological data sets and to evaluate their impact on the melting of seasonal snowpacks and glaciers. |
format |
Article in Journal/Newspaper |
author |
Onuma, Yukihiko Takeuchi, Nozomu Tanaka, Sota Nagatsuka, Naoko Niwano, Masashi Aoki, Teruo |
author_facet |
Onuma, Yukihiko Takeuchi, Nozomu Tanaka, Sota Nagatsuka, Naoko Niwano, Masashi Aoki, Teruo |
author_sort |
Onuma, Yukihiko |
title |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_short |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_full |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_fullStr |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_full_unstemmed |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_sort |
observations and modelling of algal growth on a snowpack in north-western greenland |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-2147-2018 https://noa.gwlb.de/receive/cop_mods_00005433 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005390/tc-12-2147-2018.pdf https://tc.copernicus.org/articles/12/2147/2018/tc-12-2147-2018.pdf |
long_lat |
ENVELOPE(-69.232,-69.232,77.467,77.467) |
geographic |
Greenland Qaanaaq |
geographic_facet |
Greenland Qaanaaq |
genre |
glacier Greenland Qaanaaq The Cryosphere |
genre_facet |
glacier Greenland Qaanaaq The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-12-2147-2018 https://noa.gwlb.de/receive/cop_mods_00005433 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005390/tc-12-2147-2018.pdf https://tc.copernicus.org/articles/12/2147/2018/tc-12-2147-2018.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-12-2147-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
6 |
container_start_page |
2147 |
op_container_end_page |
2158 |
_version_ |
1766009245052960768 |